I am using this (Henle) reference for ornamentation: https://www.henle.de/media/foreword/1816.pdf. The ornament in bar 9 looks like "idem" but the swoosh comes at the end (instead of at the beginning).
I would appreciate advice on how to realise this.
Wikipedia calls this a slide: https://en.wikipedia.org/wiki/Slide_(musical_ornament) — but again the swoosh is at the beginning...
Schiff doesn't ornament the G5 at first; during the repeat it sounds like a short upward scale: